Nalavade P.P.,TempleCity Institute of Technology and Engineering |
Soni P.,Asian Institute of Technology |
Salokhe V.M.,Assam University |
Niyamapa T.,Kasetsart University
International Agricultural Engineering Journal | Year: 2011
Residue management is an important aspect of soil conservation and its productivity management. It is also important for maintaining appropriate soil texture and structure while aiming for higher crop yields. Tillage plays a crucial role in the process of soil conservation and management. Excess tillage generally results into soil erosion, compaction and deterioration of soil structure, which consequently reduces its productivity. Hence current tillage trend is shifting from intensive to the reduced or conservation tillage practices. On the other hand, farmers in agricultural economy based developing countries like Bangladesh, Cambodia, India, Philippines, Thailand etc., have been following the open field burning practice for managing crop residues. These crop residues however could be potentially utilized for increasing soil fertility. In the context of present shifting trend from conventional to conservation tillage, farmers are looking for options of appropriate machinery to handle and manage heavy crop residues left after harvesting of crops like paddy and sugarcane. As residue management is a time consuming and laborious job, introduction of appropriate machinery may accelerate the adoption of conservation tillage. Disc implements, being the most versatile implements, can be used over the wide range of soil and various operating conditions. Moreover, driving tillage disc by an external power results improved performance. Consequently powered disc implements may play an important role in adopting and promoting conservation tillage practices. This paper reviews various tillage equipment used for residue management, their advantages, work quality and related issues, and confirms how powered discs are effective in residue management.
Sahu S.K.,Templecity Institute of Technology and Engineering |
Goswami S.,Ravenshaw University |
Das M.,Siksha ‘O’ Anusandhan University
Asian Journal of Water, Environment and Pollution | Year: 2013
Noise is a disturbance to the human environment and will become a major threat to the quality of human lives. In last few decades, noise in urban areas have been increasing rapidly. Noise pollution was analysed in 10 different squares (road sections) during four different specifi ed times (7-10 a.m., 11a.m.-2 p.m., 3-6 p.m., 7-10 p.m.) to assess the level of noise pollution of the Rayagada township. The sources of noise at the studied sites were predominantly attributable to motor vehicular traffi c. Noise descriptors such as L10, L50, L90, Leq, TNI (Traffi c Noise Index), NPL (Noise Pollution Level) and NC (Noise climate) were analysed to reveal the extent of noise pollution of this town. L10, L50, L90, Leq, TNI, NPL, and NC values of all 10 monitored sites ranged from 85.4 to 99.3 dB, from 72.6 to 86.5 dB, from 64.6 to 76.7 dB, from 80.4 to 99 dB, from 95.2 to 128.2 dB, from 95.1 to 159.2 dB, and from 13.3 to 30.3 dB, respectively. The present noise assessment depicted that even the minimum values of Leq (80.4 dB), NPL (95.1 dB), TNI (95.2 dB) during day time were more than the permissible limit (70 dB). The number of vehicles passing through a fi xed point on the studied road are counted to assess the traffi c volume (Q) and the percentage of heavy trucks and buses to total traffi c was also calculated to work out truck traffi c mix ratio (P). Moreover, individual contribution to environmental noise by the air horn of different motor vehicles has also been assessed during day time. The episodic and impulsive noise levels of different types of vehicles were more than the traffi c noise-limit i.e. 70 dB (A). A survey adopting questionnaire method amongst 241 local inhabitants had also been carried out to gather information regarding the effect of noise on human health.
Mishra A.K.,Berhampur University |
Panigrahi T.,Templecity Institute of Technology and Engineering |
Mishra R.K.,Berhampur University
Mathematical and Computer Modelling | Year: 2013
In this paper subordination and inclusion relations are studied for some subclasses of multivalent meromorphic functions in the punctured unit disc having a pole of order p at the origin. The subclasses under investigation are defined through combinations and iterations of a meromorphic analogue of the Cho-Kwon-Srivastava operator for normalized analytic functions. Specially, emphasis is given in this study on the effect of the increase of different parameters on the size of the subclasses. Applications are indicated for the subordination results to electromagnetic cloaking. © 2012 Elsevier Ltd.
Mukhopadhyay A.,National Institute of Technology Durgapur |
Ranjan P.,Templecity Institute of Technology and Engineering
Proceedings of 2013 International Conference on Technology, Informatics, Management, Engineering and Environment, TIME-E 2013 | Year: 2013
In the era of heavy-duty transmission control protocols (TCP), adapted for extremely hi-bandwidth datacenters; the fundamental question of stable interaction with either proposed/customized active queue management(AQM) or popularly discussed Random Early Detection (RED) remains a hotly debated issue. While there are claims of 'oscillation' only dynamical behavior, there are equally large number of claims which demonstrate the chaotic nature of different flavors of TCP and their AQM interaction. In this work, we provide a sound and analytical mathematical model of DTCP/D2TCP and study their interaction with threshold based packet marking policy. Our work shows that for a simple scenario this interaction is chaotic in nature and has large variability in dynamical behavior over orders of magnitude changes in parameter range as demonstrated by bifurcation diagrams. We conclude with numerical simulation evidence that chaotic behavior of protocols is inherent in their design which they inherit from their early vanilla TCP days, and it has serious implications for data-center throughput, load batching and collapse in Incast kind of scenario. © 2013 IEEE.
Mohanty A.,Templecity Institute of Technology and Engineering |
Mohanty P.P.,OSME Keonjhar |
International Review on Modelling and Simulations | Year: 2013
The paper presents a comparison study of Transient Stability and Reactive Power Compensation Issues in a Wind Diesel Hybrid System with different FACTS Controllers. A Small signal model of the Hybrid System is taken with the use of Fuzzy Logic based PI Controller to compensate the Reactive power generated in an Isolated Wind Diesel hybrid system. Detailed analysis of the system is undertaken with varying loading conditions. Linearised small signal models of SVC, STATCOM and UPFC are taken to study the transient stability analysis of the proposed system with IEEE type 1 Excitation System. A Self tuned Fuzzy PI Controller is implemented to tune the parameters of KP and Ki of the Hybrid System which undergoes through Voltage Instability due to sudden change in load. Simulation result shows that the proposed controller attains steady state value with less time. © 2013 Praise Worthy Prize S.r.l. -All rights reserved.
Chattaraj R.,Birla Institute of Technology |
Samal S.K.,KIIT University |
Debasis S.,Templecity Institute of Technology and Engineering
ZAMM Zeitschrift fur Angewandte Mathematik und Mechanik | Year: 2014
In this paper an attempt has been made to derive the frequency equation of torsional surface waves in initially stressed fiber reinforced layer lying over fluid saturated anisotropic porous half space under gravity. The dispersion equation has been obtained in terms of Whittaker function and its derivatives, which further expanded asymptotically and retain the terms upto second degree. The analysis of frequency equation bear out the pronounced effect of initial stress, transverse and longitudinal rigidity of reinforced material, gravity and porosity of the porous half space on the propagation of torsional surface waves. Moreover, it can be noted that in the absence of initial stress, reinforcement parameters, gravity and porosity, the frequency equation of torsional surface waves reduces to dispersion equation of Love waves in isotropic layer. This ensures the classical result that torsional surface waves do not propagate through isotropic homogeneous medium. An attempt has been made to derive the frequency equation of torsional surface waves in initially stressed fiber reinforced layer lying over fluid saturated anisotropic porous half space under gravity. The dispersion equation has been obtained in terms of Whittaker function and its derivatives, which further expanded asymptotically and retain the terms up to second degree. The analysis of frequency equation bear out the pronounced effect of initial stress, transverse and longitudinal rigidity of reinforced material, gravity and porosity of the porous half space on the propagation of torsional surface waves. Moreover, it can be noted that in the absence of initial stress, reinforcement parameters, gravity and porosity, the frequency equation of torsional surface waves reduces to dispersion equation of Love waves in isotropic layer. This ensures the classical result that torsional surface waves do not propagate through isotropic homogeneous medium. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.